I had my truck started and running one day, and it died. Just quit like someone turned off the key. Hasn't started since (several months).

Changed cam sensor
Checked battery voltage during cranking
No smoke coming out of exhaust on crank
Replaced IDM with good used
Replaced PCM with good used
Checked relays
Replaced all o-rings in hpop

This truck is a 99.5 and has 32k original miles on it. Has been well maintained, and never sat without being run. I think i'm about down to a bad hpop, but I don't see how this could be the case with such low mileage and such a quick failure. I have not been able to put the truck on anything other than cheap handheld diagnostics. Doesn't pull any codes from that. Haven't had it on AE or ford diagnostics. Is there anything else that would be preventing fuel other than the hpop? I'm pretty certain it's not the injectors themselves. Please help guys, what am I missing? I refuse to go to ford!!

Ok, I pulled the IPR off again, and serviced it this time instead of just changing the o-rings. Cleaned it very well, added a very light lubricant, put back together and installed. Truck cranked a bit, then started to act like it was going to start. One more good long crank and....started! Ran for about 5 min, then when I pushed the accelerator, it quit. I let it cool down, tapped lightly on the IPR with a screwdriver/hammer.....and fired back up. This time it ran just fine and didn't quit. I think the IPR must have been the problem all along. It's running now, but I don't trust that IPR, so it's getting replaced today.

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